// https://syzkaller.appspot.com/bug?id=b3d4ed3e41b3085ce97f4504f4183e3f99115fb2
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 279
#endif
#ifndef __NR_mkdirat
#define __NR_mkdirat 34
#endif
#ifndef __NR_mmap
#define __NR_mmap 222
#endif
#ifndef __NR_openat
#define __NR_openat 56
#endif

static unsigned long long procid;

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void use_temporary_dir(void)
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    exit(1);
  if (chmod(tmpdir, 0777))
    exit(1);
  if (chdir(tmpdir))
    exit(1);
}

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

//% This code is derived from puff.{c,h}, found in the zlib development. The
//% original files come with the following copyright notice:

//% Copyright (C) 2002-2013 Mark Adler, all rights reserved
//% version 2.3, 21 Jan 2013
//% This software is provided 'as-is', without any express or implied
//% warranty.  In no event will the author be held liable for any damages
//% arising from the use of this software.
//% Permission is granted to anyone to use this software for any purpose,
//% including commercial applications, and to alter it and redistribute it
//% freely, subject to the following restrictions:
//% 1. The origin of this software must not be misrepresented; you must not
//%    claim that you wrote the original software. If you use this software
//%    in a product, an acknowledgment in the product documentation would be
//%    appreciated but is not required.
//% 2. Altered source versions must be plainly marked as such, and must not be
//%    misrepresented as being the original software.
//% 3. This notice may not be removed or altered from any source distribution.
//% Mark Adler    madler@alumni.caltech.edu

//% BEGIN CODE DERIVED FROM puff.{c,h}

#define MAXBITS 15
#define MAXLCODES 286
#define MAXDCODES 30
#define MAXCODES (MAXLCODES + MAXDCODES)
#define FIXLCODES 288

struct puff_state {
  unsigned char* out;
  unsigned long outlen;
  unsigned long outcnt;
  const unsigned char* in;
  unsigned long inlen;
  unsigned long incnt;
  int bitbuf;
  int bitcnt;
  jmp_buf env;
};
static int puff_bits(struct puff_state* s, int need)
{
  long val = s->bitbuf;
  while (s->bitcnt < need) {
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    val |= (long)(s->in[s->incnt++]) << s->bitcnt;
    s->bitcnt += 8;
  }
  s->bitbuf = (int)(val >> need);
  s->bitcnt -= need;
  return (int)(val & ((1L << need) - 1));
}
static int puff_stored(struct puff_state* s)
{
  s->bitbuf = 0;
  s->bitcnt = 0;
  if (s->incnt + 4 > s->inlen)
    return 2;
  unsigned len = s->in[s->incnt++];
  len |= s->in[s->incnt++] << 8;
  if (s->in[s->incnt++] != (~len & 0xff) ||
      s->in[s->incnt++] != ((~len >> 8) & 0xff))
    return -2;
  if (s->incnt + len > s->inlen)
    return 2;
  if (s->outcnt + len > s->outlen)
    return 1;
  for (; len--; s->outcnt++, s->incnt++) {
    if (s->in[s->incnt])
      s->out[s->outcnt] = s->in[s->incnt];
  }
  return 0;
}
struct puff_huffman {
  short* count;
  short* symbol;
};
static int puff_decode(struct puff_state* s, const struct puff_huffman* h)
{
  int first = 0;
  int index = 0;
  int bitbuf = s->bitbuf;
  int left = s->bitcnt;
  int code = first = index = 0;
  int len = 1;
  short* next = h->count + 1;
  while (1) {
    while (left--) {
      code |= bitbuf & 1;
      bitbuf >>= 1;
      int count = *next++;
      if (code - count < first) {
        s->bitbuf = bitbuf;
        s->bitcnt = (s->bitcnt - len) & 7;
        return h->symbol[index + (code - first)];
      }
      index += count;
      first += count;
      first <<= 1;
      code <<= 1;
      len++;
    }
    left = (MAXBITS + 1) - len;
    if (left == 0)
      break;
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    bitbuf = s->in[s->incnt++];
    if (left > 8)
      left = 8;
  }
  return -10;
}
static int puff_construct(struct puff_huffman* h, const short* length, int n)
{
  int len;
  for (len = 0; len <= MAXBITS; len++)
    h->count[len] = 0;
  int symbol;
  for (symbol = 0; symbol < n; symbol++)
    (h->count[length[symbol]])++;
  if (h->count[0] == n)
    return 0;
  int left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= h->count[len];
    if (left < 0)
      return left;
  }
  short offs[MAXBITS + 1];
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++)
    offs[len + 1] = offs[len] + h->count[len];
  for (symbol = 0; symbol < n; symbol++)
    if (length[symbol] != 0)
      h->symbol[offs[length[symbol]]++] = symbol;
  return left;
}
static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode,
                      const struct puff_huffman* distcode)
{
  static const short lens[29] = {3,  4,  5,  6,   7,   8,   9,   10,  11, 13,
                                 15, 17, 19, 23,  27,  31,  35,  43,  51, 59,
                                 67, 83, 99, 115, 131, 163, 195, 227, 258};
  static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2,
                                 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0};
  static const short dists[30] = {
      1,    2,    3,    4,    5,    7,    9,    13,    17,    25,
      33,   49,   65,   97,   129,  193,  257,  385,   513,   769,
      1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
  static const short dext[30] = {0, 0, 0,  0,  1,  1,  2,  2,  3,  3,
                                 4, 4, 5,  5,  6,  6,  7,  7,  8,  8,
                                 9, 9, 10, 10, 11, 11, 12, 12, 13, 13};
  int symbol;
  do {
    symbol = puff_decode(s, lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 256) {
      if (s->outcnt == s->outlen)
        return 1;
      if (symbol)
        s->out[s->outcnt] = symbol;
      s->outcnt++;
    } else if (symbol > 256) {
      symbol -= 257;
      if (symbol >= 29)
        return -10;
      int len = lens[symbol] + puff_bits(s, lext[symbol]);
      symbol = puff_decode(s, distcode);
      if (symbol < 0)
        return symbol;
      unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]);
      if (dist > s->outcnt)
        return -11;
      if (s->outcnt + len > s->outlen)
        return 1;
      while (len--) {
        if (dist <= s->outcnt && s->out[s->outcnt - dist])
          s->out[s->outcnt] = s->out[s->outcnt - dist];
        s->outcnt++;
      }
    }
  } while (symbol != 256);
  return 0;
}
static int puff_fixed(struct puff_state* s)
{
  static int virgin = 1;
  static short lencnt[MAXBITS + 1], lensym[FIXLCODES];
  static short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  static struct puff_huffman lencode, distcode;
  if (virgin) {
    lencode.count = lencnt;
    lencode.symbol = lensym;
    distcode.count = distcnt;
    distcode.symbol = distsym;
    short lengths[FIXLCODES];
    int symbol;
    for (symbol = 0; symbol < 144; symbol++)
      lengths[symbol] = 8;
    for (; symbol < 256; symbol++)
      lengths[symbol] = 9;
    for (; symbol < 280; symbol++)
      lengths[symbol] = 7;
    for (; symbol < FIXLCODES; symbol++)
      lengths[symbol] = 8;
    puff_construct(&lencode, lengths, FIXLCODES);
    for (symbol = 0; symbol < MAXDCODES; symbol++)
      lengths[symbol] = 5;
    puff_construct(&distcode, lengths, MAXDCODES);
    virgin = 0;
  }
  return puff_codes(s, &lencode, &distcode);
}
static int puff_dynamic(struct puff_state* s)
{
  static const short order[19] = {16, 17, 18, 0, 8,  7, 9,  6, 10, 5,
                                  11, 4,  12, 3, 13, 2, 14, 1, 15};
  int nlen = puff_bits(s, 5) + 257;
  int ndist = puff_bits(s, 5) + 1;
  int ncode = puff_bits(s, 4) + 4;
  if (nlen > MAXLCODES || ndist > MAXDCODES)
    return -3;
  short lengths[MAXCODES];
  int index;
  for (index = 0; index < ncode; index++)
    lengths[order[index]] = puff_bits(s, 3);
  for (; index < 19; index++)
    lengths[order[index]] = 0;
  short lencnt[MAXBITS + 1], lensym[MAXLCODES];
  struct puff_huffman lencode = {lencnt, lensym};
  int err = puff_construct(&lencode, lengths, 19);
  if (err != 0)
    return -4;
  index = 0;
  while (index < nlen + ndist) {
    int symbol;
    int len;
    symbol = puff_decode(s, &lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 16)
      lengths[index++] = symbol;
    else {
      len = 0;
      if (symbol == 16) {
        if (index == 0)
          return -5;
        len = lengths[index - 1];
        symbol = 3 + puff_bits(s, 2);
      } else if (symbol == 17)
        symbol = 3 + puff_bits(s, 3);
      else
        symbol = 11 + puff_bits(s, 7);
      if (index + symbol > nlen + ndist)
        return -6;
      while (symbol--)
        lengths[index++] = len;
    }
  }
  if (lengths[256] == 0)
    return -9;
  err = puff_construct(&lencode, lengths, nlen);
  if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1]))
    return -7;
  short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  struct puff_huffman distcode = {distcnt, distsym};
  err = puff_construct(&distcode, lengths + nlen, ndist);
  if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1]))
    return -8;
  return puff_codes(s, &lencode, &distcode);
}
static int puff(unsigned char* dest, unsigned long* destlen,
                const unsigned char* source, unsigned long sourcelen)
{
  struct puff_state s = {
      .out = dest,
      .outlen = *destlen,
      .outcnt = 0,
      .in = source,
      .inlen = sourcelen,
      .incnt = 0,
      .bitbuf = 0,
      .bitcnt = 0,
  };
  int err;
  if (setjmp(s.env) != 0)
    err = 2;
  else {
    int last;
    do {
      last = puff_bits(&s, 1);
      int type = puff_bits(&s, 2);
      err = type == 0 ? puff_stored(&s)
                      : (type == 1 ? puff_fixed(&s)
                                   : (type == 2 ? puff_dynamic(&s) : -1));
      if (err != 0)
        break;
    } while (!last);
  }
  *destlen = s.outcnt;
  return err;
}

//% END CODE DERIVED FROM puff.{c,h}

#define ZLIB_HEADER_WIDTH 2

static int puff_zlib_to_file(const unsigned char* source,
                             unsigned long sourcelen, int dest_fd)
{
  if (sourcelen < ZLIB_HEADER_WIDTH)
    return 0;
  source += ZLIB_HEADER_WIDTH;
  sourcelen -= ZLIB_HEADER_WIDTH;
  const unsigned long max_destlen = 132 << 20;
  void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ,
                   MAP_PRIVATE | MAP_ANON, -1, 0);
  if (ret == MAP_FAILED)
    return -1;
  unsigned char* dest = (unsigned char*)ret;
  unsigned long destlen = max_destlen;
  int err = puff(dest, &destlen, source, sourcelen);
  if (err) {
    munmap(dest, max_destlen);
    errno = -err;
    return -1;
  }
  if (write(dest_fd, dest, destlen) != (ssize_t)destlen) {
    munmap(dest, max_destlen);
    return -1;
  }
  return munmap(dest, max_destlen);
}

static int setup_loop_device(unsigned char* data, unsigned long size,
                             const char* loopname, int* loopfd_p)
{
  int err = 0, loopfd = -1;
  int memfd = syscall(__NR_memfd_create, "syzkaller", 0);
  if (memfd == -1) {
    err = errno;
    goto error;
  }
  if (puff_zlib_to_file(data, size, memfd)) {
    err = errno;
    goto error_close_memfd;
  }
  loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    err = errno;
    goto error_close_memfd;
  }
  if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
    if (errno != EBUSY) {
      err = errno;
      goto error_close_loop;
    }
    ioctl(loopfd, LOOP_CLR_FD, 0);
    usleep(1000);
    if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
      err = errno;
      goto error_close_loop;
    }
  }
  close(memfd);
  *loopfd_p = loopfd;
  return 0;

error_close_loop:
  close(loopfd);
error_close_memfd:
  close(memfd);
error:
  errno = err;
  return -1;
}

static void reset_loop_device(const char* loopname)
{
  int loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    return;
  }
  if (ioctl(loopfd, LOOP_CLR_FD, 0)) {
  }
  close(loopfd);
}

static long syz_mount_image(volatile long fsarg, volatile long dir,
                            volatile long flags, volatile long optsarg,
                            volatile long change_dir,
                            volatile unsigned long size, volatile long image)
{
  unsigned char* data = (unsigned char*)image;
  int res = -1, err = 0, need_loop_device = !!size;
  char* mount_opts = (char*)optsarg;
  char* target = (char*)dir;
  char* fs = (char*)fsarg;
  char* source = NULL;
  char loopname[64];
  if (need_loop_device) {
    int loopfd;
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    close(loopfd);
    source = loopname;
  }
  mkdir(target, 0777);
  char opts[256];
  memset(opts, 0, sizeof(opts));
  if (strlen(mount_opts) > (sizeof(opts) - 32)) {
  }
  strncpy(opts, mount_opts, sizeof(opts) - 32);
  if (strcmp(fs, "iso9660") == 0) {
    flags |= MS_RDONLY;
  } else if (strncmp(fs, "ext", 3) == 0) {
    bool has_remount_ro = false;
    char* remount_ro_start = strstr(opts, "errors=remount-ro");
    if (remount_ro_start != NULL) {
      char after = *(remount_ro_start + strlen("errors=remount-ro"));
      char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1);
      has_remount_ro = ((before == '\0' || before == ',') &&
                        (after == '\0' || after == ','));
    }
    if (strstr(opts, "errors=panic") || !has_remount_ro)
      strcat(opts, ",errors=continue");
  } else if (strcmp(fs, "xfs") == 0) {
    strcat(opts, ",nouuid");
  }
  res = mount(source, target, fs, flags, opts);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  res = open(target, O_RDONLY | O_DIRECTORY);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  if (change_dir) {
    res = chdir(target);
    if (res == -1) {
      err = errno;
    }
  }

error_clear_loop:
  if (need_loop_device)
    reset_loop_device(loopname);
  errno = err;
  return res;
}

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
retry:
  while (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exit(1);
    }
    exit(1);
  }
  struct dirent* ep = 0;
  while ((ep = readdir(dp))) {
    if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
      continue;
    char filename[FILENAME_MAX];
    snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
    while (umount2(filename, MNT_DETACH | UMOUNT_NOFOLLOW) == 0) {
    }
    struct stat st;
    if (lstat(filename, &st))
      exit(1);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EPERM) {
        int fd = open(filename, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exit(1);
      if (umount2(filename, MNT_DETACH | UMOUNT_NOFOLLOW))
        exit(1);
    }
  }
  closedir(dp);
  for (int i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EPERM) {
        int fd = open(dir, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW))
          exit(1);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exit(1);
  }
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  for (int i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void reset_loop()
{
  char buf[64];
  snprintf(buf, sizeof(buf), "/dev/loop%llu", procid);
  int loopfd = open(buf, O_RDWR);
  if (loopfd != -1) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  memcpy((void*)0x20000100, "ext4\000", 5);
  memcpy((void*)0x20000500, "./file0\000", 8);
  memcpy(
      (void*)0x20000a80,
      "\x78\x9c\xec\xdd\xcf\x6f\x23\x57\x1d\x00\xf0\xef\x4c\x7e\x76\x9b\x36\xbb"
      "\xd0\x03\x54\xc0\x2e\x50\x58\xd0\x6a\xed\x8d\xb7\x5d\x55\xbd\xb4\x7b\x01"
      "\xa1\xaa\x12\xa2\xe2\x80\x38\x6c\x43\xe2\x8d\x42\xec\x38\xc4\x4e\x69\x42"
      "\x24\xd2\xbf\x01\x24\x90\x38\xc1\x9f\xc0\x01\x89\x03\x52\x4f\x1c\xb8\x71"
      "\x44\xe2\x80\x90\xca\x01\x69\x81\x08\xb4\x41\x02\xc9\x68\xc6\x93\xd4\x4d"
      "\x9c\xc6\x34\x8e\x0d\xf1\xe7\x23\x8d\x66\xde\x3c\xfb\x7d\xdf\x5b\xef\xcc"
      "\x9b\x79\x76\xe6\x05\x30\xb6\x6e\x44\xc4\x5e\x44\x4c\x47\xc4\x1b\x11\x31"
      "\x5f\xec\x4f\x8a\x25\x5e\xe9\x2c\xd9\xeb\x1e\xef\xef\x2e\x1d\xec\xef\x2e"
      "\x25\xd1\x6e\xbf\xfe\xd7\x24\xcf\xcf\xf6\x45\xd7\x7b\x32\x4f\x16\x65\xce"
      "\x46\xc4\xd7\xbe\x1c\xf1\xad\xe4\x64\xdc\xe6\xf6\xce\xda\x62\xad\x56\xdd"
      "\x2c\xd2\xe5\x56\x7d\xa3\xdc\xdc\xde\xb9\xbd\x5a\x5f\x5c\xa9\xae\x54\xd7"
      "\x2b\x95\x7b\x0b\xf7\xee\xbc\x78\xf7\x85\xca\xc0\xda\x7a\xbd\xfe\xf3\x47"
      "\x5f\x5a\x7d\xf5\xeb\xbf\xfa\xe5\x27\xdf\xfd\xed\xde\x17\xbf\x97\x55\x6b"
      "\xae\xc8\xeb\x6e\xc7\x20\x75\x9a\x3e\x75\x14\x27\x33\x19\x11\xaf\x5e\x44"
      "\xb0\x11\x98\x28\xd6\xd3\x23\xae\x07\x1f\x4e\x1a\x11\x1f\x89\x88\xcf\xe4"
      "\xc7\xff\x7c\x4c\xe4\xff\x3b\x01\x80\xcb\xac\xdd\x9e\x8f\xf6\x7c\x77\x1a"
      "\x00\xb8\xec\xd2\x7c\x0c\x2c\x49\x4b\xc5\x58\xc0\x5c\xa4\x69\xa9\xd4\x19"
      "\xc3\x7b\x26\xae\xa4\xb5\x46\xb3\x75\xeb\x61\x63\x6b\x7d\xb9\x33\x56\x76"
      "\x35\xa6\xd2\x87\xab\xb5\xea\x9d\x6b\x33\xbf\xff\x4e\x7e\xc5\x30\x95\x64"
      "\xe9\x85\x3c\x2f\xcf\xcf\xd3\x95\x63\xe9\xbb\x11\x71\x2d\x22\x7e\x38\xf3"
      "\x44\x9e\x2e\x2d\x35\x6a\xcb\xa3\xbb\xec\x01\x80\xb1\xf6\xe4\xb1\xfe\xff"
      "\x1f\x33\x9d\xfe\xbf\x0f\x3d\xbe\xd5\x03\x00\xfe\x6f\xcc\x8e\xba\x02\x00"
      "\xc0\xd0\xe9\xff\x01\x60\xfc\xe8\xff\x01\x60\xfc\xf4\xd1\xff\x17\x5f\xf6"
      "\xef\x5d\x78\x5d\x00\x80\xe1\x70\xff\x0f\x00\xe3\x47\xff\x0f\x00\xe3\x47"
      "\xff\x0f\x00\x63\xe5\xab\xaf\xbd\x96\x2d\xed\x83\xe2\xf9\xd7\xcb\x6f\x6e"
      "\x6f\xad\x35\xde\xbc\xbd\x5c\x6d\xae\x95\xea\x5b\x4b\xa5\xa5\xc6\xe6\x46"
      "\x69\xa5\xd1\x58\xc9\x9f\xd9\x53\x3f\xab\xbc\x5a\xa3\xb1\xb1\xf0\x7c\x6c"
      "\xbd\x55\x6e\x55\x9b\xad\x72\x73\x7b\xe7\x41\xbd\xb1\xb5\xde\x7a\x90\x3f"
      "\xd7\xfb\x41\x75\x6a\x28\xad\x02\x00\x3e\xc8\xb5\xeb\xef\xfc\x2e\x89\x88"
      "\xbd\x97\x9e\xc8\x97\xe8\x9a\xcb\x41\x5f\x0d\x97\x5b\x3a\xea\x0a\x00\x23"
      "\x33\x31\xea\x0a\x00\x23\x63\xb6\x2f\x18\x5f\xfd\xdf\xe3\xff\xe6\x42\xeb"
      "\x01\x8c\x4e\xcf\x87\x79\xcf\xf6\xdc\x7c\xbf\x1f\xff\x17\x41\xfc\xce\x08"
      "\xfe\xa7\xdc\xfc\x78\xff\xe3\xff\xe6\x78\x86\xcb\xc5\xf8\x3f\x8c\xaf\x0f"
      "\x37\xfe\xff\xf2\xc0\xeb\x01\x0c\x9f\xf1\x7f\x18\x5f\xed\x76\x72\x7c\xce"
      "\xff\xe9\xa3\x2c\x00\xe0\x52\x3a\xc7\x6f\xfc\xdb\xdf\x1f\xd4\x45\x08\x30"
      "\x52\x67\x4d\xe6\x3d\x90\xef\xff\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe0\x92\x99\x8b"
      "\x88\x6f\x47\x92\x96\x8a\xb9\xc0\xe7\x22\x4d\x4b\xa5\x88\xa7\x22\xe2\x6a"
      "\x4c\x25\x0f\x57\x6b\xd5\x3b\x11\xf1\x74\x5c\x8f\x88\xa9\x99\x2c\xbd\x30"
      "\xea\x4a\x03\x00\xe7\x94\xfe\x39\x29\xe6\xff\xba\x39\xff\xdc\xdc\xf1\xdc"
      "\xe9\xe4\x9f\x33\xf9\x3a\x22\xbe\xfb\x93\xd7\x7f\xf4\xd6\x62\xab\xb5\xb9"
      "\x90\xed\xff\xdb\xd1\xfe\x99\xc3\xe9\xc3\x2a\xef\xbd\xef\x1c\xf3\x0a\x02"
      "\x00\x03\x96\xf7\xdf\x95\x62\xdd\x75\x23\xff\x78\x7f\x77\xe9\x70\x19\x66"
      "\x7d\x1e\xdd\x8f\x7f\x17\x53\x11\x2f\x1d\xec\xef\xe6\x4b\x27\x67\x32\x26"
      "\xf3\xf5\x6c\x7e\x2d\x71\xe5\xef\x49\x91\xee\xcc\x45\xfa\x6c\x44\x4c\x0c"
      "\x20\xfe\xde\xdb\x11\xf1\xb1\x5e\xed\x4f\xf2\xb1\x91\xab\xc5\xcc\xa7\xdd"
      "\xf1\xa3\x88\xfd\xd4\x50\xe3\xa7\xef\x8b\x9f\xe6\x79\x9d\x75\x76\xf1\xf5"
      "\xd1\x01\xd4\x05\xc6\xcd\x3b\xf7\x23\xe2\x95\x5e\xc7\x5f\x1a\x37\xf2\x75"
      "\xef\xe3\x7f\x36\x3f\x43\x9d\xdf\xa3\xfb\x9d\xc2\x0e\xcf\x7d\x07\x5d\xf1"
      "\x0f\xcf\x7f\x13\x3d\xe2\x67\xc7\xfc\x8d\x7e\x63\x3c\xff\xeb\xaf\x9c\xd8"
      "\xd9\x9e\xef\xe4\xbd\x1d\xf1\xec\x64\xaf\xf8\xc9\x51\xfc\xe4\x94\xf8\xcf"
      "\xf5\x19\xff\x0f\x9f\xf8\xd4\x0f\x5e\x3e\x25\xaf\xfd\xd3\x88\x9b\xd1\x3b"
      "\x7e\x77\xac\x72\xab\xbe\x51\x6e\x6e\xef\xdc\x5e\xad\x2f\xae\x54\x57\xaa"
      "\xeb\x95\xca\xbd\x85\x7b\x77\x5e\xbc\xfb\x42\xa5\x9c\x8f\x51\x97\x0f\x47"
      "\xaa\x4f\xfa\xcb\x4b\xb7\x9e\x3e\xad\x6e\x59\xfb\xaf\x9c\x12\x7f\xb6\x67"
      "\xfb\xa7\x8f\xde\xfb\xb9\x3e\xdb\xff\xb3\x7f\xbd\xf1\xcd\x4f\x7f\x40\xfc"
      "\x2f\x7c\xb6\xf7\xe7\xff\x4c\xcf\xf8\x1d\x59\x9f\xf8\xf9\x3e\xe3\x2f\x5e"
      "\xf9\xc5\xa9\xd3\x77\x67\xf1\x97\x4f\x69\xff\x59\x9f\xff\xad\x3e\xe3\xbf"
      "\xfb\xa7\x9d\xe5\x3e\x5f\x0a\x00\x0c\x41\x73\x7b\x67\x6d\xb1\x56\xab\x6e"
      "\x9e\x6b\x23\xbb\x0b\x1d\x44\x39\x27\x36\xb2\x2a\x0e\xb4\xc0\x33\x36\xfe"
      "\x18\xc3\x8b\x75\xe6\xc6\xd4\x45\xfd\xab\x5e\xf8\xc6\xe4\xd1\xb5\xe2\x60"
      "\x4b\xfe\x46\x56\xe2\x90\x9b\x93\x0e\xbc\x15\xe7\xda\x78\x3c\xac\x58\xa3"
      "\x3d\x2f\x01\x17\xef\xbd\x83\x7e\xd4\x35\x01\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x4e\x33\x8c\x3f\x5d\x1a\x75\x1b\x01\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\xb8\xbc\xfe\x13\x00\x00\xff\xff\xb6\x28\xcc\x8d",
      1326);
  syz_mount_image(/*fs=*/0x20000100, /*dir=*/0x20000500,
                  /*flags=MS_LAZYTIME|MS_NOSUID*/ 0x2000002,
                  /*opts=*/0x20000080, /*chdir=*/1, /*size=*/0x52e,
                  /*img=*/0x20000a80);
  memcpy((void*)0x200005c0, "./file0\000", 8);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200005c0ul,
                /*flags=*/0ul, /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x20000000, "./bus\000", 6);
  syscall(__NR_mkdirat, /*fd=*/r[0], /*path=*/0x20000000ul, /*mode=*/0ul);
  memcpy((void*)0x20000040, "ext4\000", 5);
  memcpy((void*)0x20000300, "./file0\000", 8);
  memcpy((void*)0x20000140,
         "orlov,noblock_validity,usrquota,errors=remount-ro,nojournal_checksum,"
         "jqfmt=vfsold,noinit_itable,inode_readahead_blks=0x0000000000000001,"
         "resuid=",
         143);
  sprintf((char*)0x200001cf, "0x%016llx", (long long)0);
  memset((void*)0x200001e1, 0, 2);
  memcpy(
      (void*)0x20000bc0,
      "\x78\x9c\xec\xdd\x5d\x6b\x5b\xe7\x1d\x00\xf0\xff\x39\xb6\xf2\xea\xcc\x0e"
      "\xdb\x45\x16\x58\x16\x96\x0c\x3b\x6c\x91\xec\x78\x49\xcc\x2e\xb2\x6c\x8c"
      "\xed\x2a\xb0\x2d\xbb\x5e\xe6\xd9\xb2\x31\x96\x2d\x63\xc9\x49\x6c\xc2\xe6"
      "\xb0\x0f\x30\x18\x63\x1b\x0c\x06\xbd\xea\x4d\xa1\x1f\xa0\x50\xf2\x11\x4a"
      "\x21\xd0\xde\x97\xb6\xb4\x94\x36\x69\x2f\x72\xd1\x46\x45\x6f\x79\x71\x24"
      "\xbf\x10\xd9\x0a\xd6\xef\x07\xc7\xe7\x79\xce\x8b\xff\xcf\x5f\x42\x47\x7a"
      "\xce\x79\x38\x27\x80\x9e\x75\x3a\x22\xce\x44\xc4\xe3\x4a\xa5\x72\x2e\x22"
      "\x06\x1b\xcb\xd3\xc6\x74\xb5\x5a\x59\xaf\x6f\xf7\xf0\xc1\x9d\xa9\xea\x94"
      "\x44\xa5\x72\xfd\xf3\x24\x22\xa9\x2f\xab\x6e\x32\xf2\xcc\xff\x3c\x5a\xdf"
      "\x25\x0e\x45\xc4\x1f\x7e\x1b\xf1\x97\xe4\xc5\xb8\xa5\xd5\xb5\xf9\xc9\x42"
      "\x21\xbf\xdc\xa8\xe7\xca\x0b\x4b\xb9\xd2\xea\xda\xf9\xb9\x85\xc9\xd9\xfc"
      "\x6c\x7e\x71\x7c\x7c\xec\xd2\xc4\xe5\x89\x8b\x13\xa3\x1d\xc9\x73\x20\x22"
      "\xae\xfc\xfa\xe3\x7f\xff\xe3\xf5\xdf\x5c\x79\xfb\xa7\xb7\x3e\xb8\xf1\xe9"
      "\xc8\x5f\x93\xc6\xf2\x88\xa7\x79\x74\x5a\x3d\xf5\x4c\xed\xb5\x68\xea\x8f"
      "\x88\xe5\xdd\x08\xd6\x05\x7d\x8d\x7c\x32\xdb\xdf\xe5\xe0\x6e\xb6\x07\x00"
      "\x80\xcd\x35\x7f\xe7\xff\x28\x22\xce\xc5\x60\xf4\xd5\x7e\xcd\x01\x00\x00"
      "\x00\xfb\x49\xe5\x17\x03\xf1\x75\x12\x51\x01\x00\x00\x00\xf6\xad\xb4\x36"
      "\x06\x36\x49\xb3\x8d\x71\x00\x03\x91\xa6\xd9\x6c\x7d\x0c\xef\xf7\xe2\x48"
      "\x5a\x28\x96\xca\x3f\x99\x29\xae\x2c\x4e\xd7\xc7\xca\x0e\x45\x26\x9d\x99"
      "\x2b\xe4\x47\x1b\x63\x85\x87\x22\x93\x54\xeb\x63\xb5\xf2\xd3\xfa\x85\x0d"
      "\xf5\xf1\x88\x38\x1e\x11\xff\x1a\x3c\x5c\xab\x67\xa7\x8a\x85\xe9\x6e\x9f"
      "\xfc\x00\x00\x00\x80\x1e\x71\x74\x43\xff\xff\xab\xc1\x7a\xff\x1f\x00\x00"
      "\x00\xd8\x67\x86\xba\xdd\x00\x00\x00\x00\x60\xd7\xe9\xff\x03\x00\x00\xc0"
      "\xfe\xa7\xff\x0f\x00\x00\x00\xfb\xda\xef\xae\x5d\xab\x4e\x95\xe6\xf3\xaf"
      "\xa7\x6f\xae\xae\xcc\x17\x6f\x9e\x9f\xce\x97\xe6\xb3\x0b\x2b\x53\xd9\xa9"
      "\xe2\xf2\x52\x76\xb6\x58\x9c\xad\xdd\xb3\x6f\x61\xab\xff\x57\x28\x16\x97"
      "\x7e\x16\x8b\x2b\xb7\x73\xe5\x7c\xa9\x9c\x2b\xad\xae\xdd\x58\x28\xae\x2c"
      "\x96\x6f\xcc\x3d\xf7\x08\x6c\x00\x00\x00\x60\x0f\x1d\xff\xe1\xbd\xf7\x93"
      "\x88\x58\xff\xf9\xe1\xda\x54\x75\xa0\xdb\x8d\x02\xf6\x44\xff\x4e\x36\xfe"
      "\x68\xf7\xda\x01\xec\xbd\xbe\x6e\x37\x00\xe8\x9a\x1d\x7d\xff\x03\xfb\x4a"
      "\xa6\xdb\x0d\x00\xba\x2e\x89\x88\xff\x6f\xb2\xbe\xed\xe0\x9d\x77\x76\xa7"
      "\x3d\x00\x00\x40\xe7\x0d\x7f\xbf\xf5\xf5\xff\x64\xcb\x73\x03\xeb\xe9\x1e"
      "\x35\x11\xd8\x25\xce\xff\x41\xef\x72\xfd\x1f\x7a\x97\xeb\xff\xd0\xbb\x32"
      "\xd1\x17\x3a\xf2\xd0\xdb\x92\x2d\xd6\xbf\xfc\xf5\xff\x4a\x65\x47\x0d\x02"
      "\x00\x00\x3a\x6e\xa0\x36\x25\x69\x36\xa2\x76\x1e\x60\x20\xd2\x34\x9b\x8d"
      "\x38\x56\x7b\x2c\x40\x26\x99\x99\x2b\xe4\x47\x23\xe2\x3b\x11\xf1\xde\x60"
      "\xe6\x60\xb5\x3e\x56\xdb\x33\xd9\xb2\xcf\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xd4\x55\x2a\x49\x54\x00"
      "\x00\x00\x80\x7d\x2d\x22\xfd\x24\x69\x3c\xff\x6b\x78\xf0\xec\xc0\xc6\xf3"
      "\x03\x07\x92\x47\x83\xb5\x79\x44\xdc\xfa\xdf\xf5\xff\xdc\x9e\x2c\x97\x97"
      "\xc7\xaa\xcb\xbf\x78\xb2\xbc\xfc\xdf\xc6\xf2\x0b\xdd\x38\x83\x01\x00\x00"
      "\x00\x6c\xd4\xec\xa7\x37\xfb\xf1\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\xd0\x49\x0f\x1f\xdc\x99\x6a\x4e\x7b"
      "\x19\xf7\xb3\x5f\x46\xc4\x50\xab\xf8\xfd\x71\xa8\x36\x3f\x14\x99\x88\x38"
      "\xf2\x65\x12\xfd\xcf\xec\x97\x44\x44\x5f\x07\xe2\xaf\xdf\x8d\x88\x5f\xfd"
      "\xa9\x45\xfc\xa4\xda\xac\x18\x6a\xb4\xa2\x55\xfc\xc3\x9d\x8a\x7f\xa2\x55"
      "\xfe\x9b\xc7\x4f\x23\xe2\x68\x07\xe2\x43\x2f\xbb\x57\x3d\xfe\x5c\x6d\xf5"
      "\xf9\x4b\xe3\x74\x6d\xbe\xf1\xf3\x77\xf0\xc9\xbe\xfd\x1d\x88\xdf\xfe\xf8"
      "\x97\x3e\x39\xfe\xf5\xb5\x39\xfe\x1c\xdb\x66\x8c\x93\xf7\xdf\xcc\xb5\x8d"
      "\x7f\x37\xe2\x64\x7f\xeb\xe3\x4f\x33\x7e\xd2\x26\xfe\x99\x6d\xc6\xff\xf3"
      "\x1f\xd7\xd6\xda\xad\xab\xbc\x16\x31\xdc\xf2\xfb\x27\x79\x2e\x56\xae\xbc"
      "\xb0\x94\x2b\xad\xae\x9d\x9f\x5b\x98\x9c\xcd\xcf\xe6\x17\xc7\xc7\xc7\x2e"
      "\x4d\x5c\x9e\xb8\x38\x31\x9a\x9b\x99\x2b\xe4\x1b\x7f\x5b\xc6\xf8\xe7\x0f"
      "\xde\x7a\xbc\x59\xfe\x47\xda\xc4\x1f\xda\x22\xff\xb3\xdb\xcc\xff\x9b\xfb"
      "\xb7\x1f\x7c\xb7\x5e\xcc\xb4\x8a\x3f\x72\xa6\xf5\xfb\x7f\xa2\x4d\xfc\xb4"
      "\xf1\xdd\xf7\xe3\x46\xb9\xba\x7e\xb8\x59\x5e\xaf\x97\x9f\x75\xea\x8d\x77"
      "\x4f\x6d\x96\xff\x74\x9b\xfc\xb7\x7a\xff\x47\xb6\x99\xff\xb9\xdf\xff\xfd"
      "\xc3\x6d\x6e\x0a\x00\xec\x81\xd2\xea\xda\xfc\x64\xa1\x90\x5f\xee\xe9\xc2"
      "\x4b\xbd\x1a\xd5\x9f\x45\xaf\x44\x16\x0a\x3b\x2d\xfc\xed\xd5\x68\xc6\x2b"
      "\x59\x68\x7e\x26\x1e\x75\xed\xd8\x04\x00\x00\x74\xd6\x8b\x7d\x60\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x60\xaf\x75\xe6\x9e"
      "\x61\xcd\x7b\x62\x6f\x7e\x77\xbd\xa6\xf5\xfa\xec\x85\x7b\x21\x03\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x74\xd3\xb7\x01\x00\x00\xff\xff\xe0\xfb\xd2\xde",
      1256);
  syz_mount_image(/*fs=*/0x20000040, /*dir=*/0x20000300,
                  /*flags=MS_RDONLY|MS_DIRSYNC|0x400000*/ 0x400081,
                  /*opts=*/0x20000140, /*chdir=*/0x1b, /*size=*/0x4e8,
                  /*img=*/0x20000bc0);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  use_temporary_dir();
  loop();
  return 0;
}